Ring-spinning frame.



PATENTED JUNE 14, 1904.

R. KRON. RING SPINNING FRAME. APPLIGATION FILED APR. 15, 190s.

N0 MODEL.

[nvenar rn: mams PETERS co.. norlumo.. wmmoToN. n'. c.

'UNITED STATES 'Patented June '14, 1904.

PATENT OFFICE.

RING-SPINNING `FFANI.

SPECIFICATION forming part of LettersPatent No. 762,64, dated June 14, 1904. Application niet April 15,1903'. s semi nt. 152,644. (No model.)

To all whom it may concern/.u

Be it known that I, RUDOLF KRoN, a citizen 'of the Republic of Switzerland, and a resident of Grolzern, near Grimma., Kingdom of Saxony, Germ an Empire, have invented a new and useful Improvement in Ring-Spinning Frames for Producing Hollow /Veft-Cops Capable of Being Removable Singly, of which the following is a specification.

The ring-spinning frame according to the present invention allows of producing` hollow cops of weft which are adapted to be inserted directly into the shuttles of a loom and in which the thread is drawn oif from the interior of the cop, these cops being capable of being removed singly during the working of the frame without interfering with and withouty stoppage of the spindles which are running bythe side of the cop that is being removed. A ring-spinning' frame of'this kind is characterized, accordingto this invention, by the fact that in it the feeding-rolls, the ringrail, and the thread-board kcan be moved up' and down together as a homogeneous wholeV with unaltered vertical extent of strokes by means of slide-bars adjustably mounted in the framing of the machine, while the spindles, on which the thread can be wound directly or after a cop-tube has been placed on the spindles, are pushed up slowly by means of suitable feed-gearing. These two motions-the alternate vertical movements of the feed-rolls, of the ring-carrier, and of the thread-board, onV

purpose of forming a long hollo'w cop. A

cop produced in the way above stated can then (after the mechanism for feeding it upwardly and for rotating it has been previously thrown out of operation) be removed without stopping the adjacent spindles and while the machine is running, and then the formation of a fresh cop can be begun at once.

The improvement is particularly adapted for spinning narrow strips or ribbons of paper-pulp, cellulose, asbestos fibers, and the likesuch as, for example, those which have been produced by the process which is the subject of application, Serial No. 134,201, for United States patent and which are still wet and rolled up in amagaZine-roll or only loosely adherent to one another. Itis, ofcourse, not intended to exclude the use of such machine .from the spinning of threads from textile iibers or the conversion of those threads into hollow cops.

My invention is illustrated in the accompanying drawings, in which- Figure l represents a longitudinal elevation, partly in section, of a machine embodying the improvement; Fig. 2., a transverse sectional elevation ofthe machine;V Fig. 3, a vertical sectional view, on a larger scale, of details of the ymechanism for driving the spindles and of a modification of the mechanism for the building up of the hollow weft-cop with the spindle partly raised.

a, Fig. 2, is the drum, which revolves at about three hundred to six hundred revolutions per minute and which drives the band pulleys or whirls of the spindles c with about a tenfold speed increase ratio by means of the bands o'. The feed-rolls e e, which are mounted above the machine-framing di@ on two upright slide-bars CZ'CZ, are driven with aboutatenfold speed decrease ratio from the drum a by means of the bands e and the pulleys e". From this drum also the shaft f, that is mounted in the lower part of the machine-framing dal", is driven at about a fiftyfold speed decrease ratio by means of the spur-gears f', f", f, and fm. rlhis shaft f has fixed on it cams g. Thelower ends of the slide-bars CZ (l bear on these cams 'g and are moved up and down with constant strokes when the said cams are rotated.

The slide-bars l Z are guided in their upand-down motion by straight guides at 7L /Lin the machine-framing. i The machine-framing IOO these cams are rotated all the slide-bars (Z l in the machine move up and down with the same constant vertical extent of strokes.

On the slide-bars d (Z are fixed the saddlepieces c' to which are bolted or otherwise suitably fastened the ring -rail j and also the rail Z, which serves as an antiballooning device for limiting' the ballooning' of the thread. These rails extend along the entire length of the machine.

The bar a, which carries the thread-guides m and which is likewise carried along the entire length of the machine,is also attached,like each bearing 0 of the feed-rolls c e, directly to the slide-bars (Z 4Z, so that when the slide-bars (l (l move up and down the parts c e y' Z a will all share this up-and-down motion together.

The spinning length or reach which remains constant is equal to the distance of the central axis of the lower feed-roll c from the center of the thread-guides If; of the rings, while the winding-on length which is shifted by the travel of the slide-bars Z is equal to the distance of the center of the thread-guides f: from the lower surface of the ring-rail y'. rIhis winding-on length produces a cross-winding at this place.

Now in order to enable hollow cops to be produced by this cross-winding a slow upward motion must be imparted to the spindles c, which are formed at their upper ends with thickened heads ci?. For this purpose the feet or bearing ends of the spindles c rest in footsteps p, which slide in suitable holes in the spindle-rail q and which are moved upwardly by means of feedingmechanisms that may consist of racks r, feed or ratchet wheels s, and pawls t, Fig. 2, or by means of similar disconnectible feeding devices driven from the shaft f or from another parallel shaft fw. rI`he winding on the spindle c begins on the conically-shaped head c'x of the spindle and then passes onto the naked spindle c or onto a paper or sheet-metal tube slipped onto the spindle and iscompleted when the spindle has reached its highest point. By raising a disengaging lever a, which is provided for each spindle, said lever being movably jointed at the top to the thread-guide m (which is hinged to the rail a) and at the bottom to the feed-pawl t, the mechanism for raising and rotating the spindle c may be stopped, and then each separately built-up cop fu may be removed from its spindle during the continuing movement of the spinning-machine and without interfering with the spindles that are running next to the spindle from which this cop is to be removed.

The motion of the spindles is, when the cop is to be completed, stopped in the following' inanner: `When the cop o reaches its height, it raises automatically the thread-guide m, which being connected by the lever a to the brake u, situated underneath the whirl 71, acts on such brake, whereupon the whirl is stopped by clamping action.

The motion for raising the spindle c may be derived from the shaft f in many different ways-for example, by providing on the ratchet-wheel shaft w, Fig. 2, one or more weighted levers .fr mi", said levers being loose on said shaft. The lower weighted arms of these levers bear on pins gif', projecting from the sides of the cams g, and their upper arms aff carry pawls t, which engage with the ratchet-wheelss. By the rotation of the shaft f the pins gf are caused to so oscillate the levers a' that their pawls t act upon the ratchetwheels s, thereby causing the latter to advance, and thus produce a feeding movement of' the toothed wheels z, that engage with the racks y' of the several spindles o.

The mechanism for raising the spindles c might be modified in various ways. So, for instance, in the arrangement according to Fig. 3 the racks 'r of Figs. 1 and 2 are replaced by screw-threads. In this modification the footstep p of each spindle c rests in a disk l, forming the upper part or head of a screw-spindle 2. On this screw-spindle is rotating the nut of a worm-wheel 3 in engagement with a screw 4 on a horizontal shaft 5, extending along' the entire length of the machine. On rotation of this shaft 5 the screw 4 is rotated, engaging the worm-wheel 3, which acts as a nut and effects a gradual raising of the spindle 2, and consequently of the spindle c.

I claiml. In a ring-spinning frame for the production of hollow weft-cops, the combination of the spindles c and steps p therefor, the slidebars d and guides therefor in the frame of the machine, the feed-rolls c e carried by said slide-bars, the thread-guides m and the bar a carried by said slide-bars, the rail t serving as an antiballooning device carried by said slide-bars, the rail y' provided with the rings and thread-guides c of a number of spindles c also carried by said slide-bars, means for raising' the spindle-steps step by step, and means for driving the spindles.

2. In a ring-spinning frame for the production of hollow weft-cops, the combination with vertically-moving slide-bars, and attached feed-rolls and ring-rail, of spindles and steps therefor situated between said slide-bars, racks attached to said steps, a rotary shaft and gears thereon engaging with said racks, ratchet-wheels on said shaft, and weighted levers carrying pawls engaging with said ratchet-wheels, said racks, shaft, gears, ratchetwheels, pawls and levers forming a feeding mechanism for the upward movement, of the separate spindle-steps independently of the vertical movement of said slide-bars, feedrollers and ring-rail.

3. In a ring-spinning frame for the production of hollow weft-cops, the combination with IOC IIO

In testimony that I claim the foregoing as my invention I have signed my name, in pres-A I@ ence of two witnesses, this 1st day of April,

RUDOLF KRON.

' Witnesses:

`RUDOLF SCHMIDT,

PAUL Ei SGHILLING. 

